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kconfig/lxdialog: support resize
In all dialogs now properly catch KEY_RESIZE and take proper action. In mconf try to behave sensibly when a dialog routine returns -ERRDISPLAYTOOSMALL. The original check for a screnn size of 80x19 is kept for now. It may make sense to remove it later, but thats anyway what much text is adjusted for. Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
This commit is contained in:
Sam Ravnborg
Sam Ravnborg
parent
f3cbcdc955
commit
c8dc68ad0f
8 changed files with 161 additions and 71 deletions
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@ -25,22 +25,36 @@ static void back_lines(int n);
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static void print_page(WINDOW * win, int height, int width);
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static void print_line(WINDOW * win, int row, int width);
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static char *get_line(void);
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static void print_position(WINDOW * win, int height, int width);
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static void print_position(WINDOW * win);
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static int hscroll;
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static int begin_reached, end_reached, page_length;
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static const char *buf;
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static const char *page;
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/*
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* refresh window content
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*/
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static void refresh_text_box(WINDOW *dialog, WINDOW *box, int boxh, int boxw,
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int cur_y, int cur_x)
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{
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print_page(box, boxh, boxw);
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print_position(dialog);
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wmove(dialog, cur_y, cur_x); /* Restore cursor position */
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wrefresh(dialog);
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}
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/*
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* Display text from a file in a dialog box.
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*/
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int dialog_textbox(const char *title, const char *tbuf, int height, int width)
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int dialog_textbox(const char *title, const char *tbuf,
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int initial_height, int initial_width)
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{
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int i, x, y, cur_x, cur_y, key = 0;
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int texth, textw;
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int height, width, boxh, boxw;
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int passed_end;
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WINDOW *dialog, *text;
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WINDOW *dialog, *box;
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begin_reached = 1;
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end_reached = 0;
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@ -49,6 +63,25 @@ int dialog_textbox(const char *title, const char *tbuf, int height, int width)
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buf = tbuf;
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page = buf; /* page is pointer to start of page to be displayed */
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do_resize:
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getmaxyx(stdscr, height, width);
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if (height < 8 || width < 8)
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return -ERRDISPLAYTOOSMALL;
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if (initial_height != 0)
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height = initial_height;
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else
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if (height > 4)
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height -= 4;
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else
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height = 0;
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if (initial_width != 0)
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width = initial_width;
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else
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if (width > 5)
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width -= 5;
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else
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width = 0;
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/* center dialog box on screen */
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x = (COLS - width) / 2;
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y = (LINES - height) / 2;
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@ -58,14 +91,14 @@ int dialog_textbox(const char *title, const char *tbuf, int height, int width)
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dialog = newwin(height, width, y, x);
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keypad(dialog, TRUE);
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/* Create window for text region, used for scrolling text */
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texth = height - 4;
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textw = width - 2;
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text = subwin(dialog, texth, textw, y + 1, x + 1);
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wattrset(text, dlg.dialog.atr);
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wbkgdset(text, dlg.dialog.atr & A_COLOR);
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/* Create window for box region, used for scrolling text */
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boxh = height - 4;
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boxw = width - 2;
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box = subwin(dialog, boxh, boxw, y + 1, x + 1);
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wattrset(box, dlg.dialog.atr);
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wbkgdset(box, dlg.dialog.atr & A_COLOR);
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keypad(text, TRUE);
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keypad(box, TRUE);
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/* register the new window, along with its borders */
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draw_box(dialog, 0, 0, height, width,
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@ -86,11 +119,8 @@ int dialog_textbox(const char *title, const char *tbuf, int height, int width)
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getyx(dialog, cur_y, cur_x); /* Save cursor position */
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/* Print first page of text */
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attr_clear(text, texth, textw, dlg.dialog.atr);
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print_page(text, texth, textw);
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print_position(dialog, height, width);
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wmove(dialog, cur_y, cur_x); /* Restore cursor position */
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wrefresh(dialog);
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attr_clear(box, boxh, boxw, dlg.dialog.atr);
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refresh_text_box(dialog, box, boxh, boxw, cur_y, cur_x);
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while ((key != KEY_ESC) && (key != '\n')) {
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key = wgetch(dialog);
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@ -99,7 +129,7 @@ int dialog_textbox(const char *title, const char *tbuf, int height, int width)
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case 'e':
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case 'X':
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case 'x':
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delwin(text);
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delwin(box);
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delwin(dialog);
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return 0;
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case 'g': /* First page */
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@ -107,10 +137,8 @@ int dialog_textbox(const char *title, const char *tbuf, int height, int width)
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if (!begin_reached) {
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begin_reached = 1;
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page = buf;
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print_page(text, texth, textw);
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print_position(dialog, height, width);
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wmove(dialog, cur_y, cur_x); /* Restore cursor position */
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wrefresh(dialog);
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refresh_text_box(dialog, box, boxh, boxw,
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cur_y, cur_x);
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}
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break;
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case 'G': /* Last page */
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@ -119,11 +147,9 @@ int dialog_textbox(const char *title, const char *tbuf, int height, int width)
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end_reached = 1;
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/* point to last char in buf */
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page = buf + strlen(buf);
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back_lines(texth);
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print_page(text, texth, textw);
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print_position(dialog, height, width);
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wmove(dialog, cur_y, cur_x); /* Restore cursor position */
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wrefresh(dialog);
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back_lines(boxh);
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refresh_text_box(dialog, box, boxh, boxw,
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cur_y, cur_x);
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break;
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case 'K': /* Previous line */
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case 'k':
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@ -138,16 +164,16 @@ int dialog_textbox(const char *title, const char *tbuf, int height, int width)
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* point to start of next page. This is done
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* by calling get_line() in the following
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* 'for' loop. */
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scrollok(text, TRUE);
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wscrl(text, -1); /* Scroll text region down one line */
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scrollok(text, FALSE);
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scrollok(box, TRUE);
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wscrl(box, -1); /* Scroll box region down one line */
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scrollok(box, FALSE);
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page_length = 0;
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passed_end = 0;
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for (i = 0; i < texth; i++) {
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for (i = 0; i < boxh; i++) {
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if (!i) {
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/* print first line of page */
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print_line(text, 0, textw);
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wnoutrefresh(text);
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print_line(box, 0, boxw);
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wnoutrefresh(box);
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} else
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/* Called to update 'end_reached' and 'page' */
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get_line();
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@ -157,7 +183,7 @@ int dialog_textbox(const char *title, const char *tbuf, int height, int width)
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passed_end = 1;
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}
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print_position(dialog, height, width);
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print_position(dialog);
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wmove(dialog, cur_y, cur_x); /* Restore cursor position */
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wrefresh(dialog);
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}
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@ -167,23 +193,21 @@ int dialog_textbox(const char *title, const char *tbuf, int height, int width)
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case KEY_PPAGE:
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if (begin_reached)
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break;
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back_lines(page_length + texth);
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print_page(text, texth, textw);
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print_position(dialog, height, width);
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wmove(dialog, cur_y, cur_x);
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wrefresh(dialog);
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back_lines(page_length + boxh);
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refresh_text_box(dialog, box, boxh, boxw,
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cur_y, cur_x);
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break;
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case 'J': /* Next line */
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case 'j':
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case KEY_DOWN:
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if (!end_reached) {
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begin_reached = 0;
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scrollok(text, TRUE);
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scroll(text); /* Scroll text region up one line */
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scrollok(text, FALSE);
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print_line(text, texth - 1, textw);
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wnoutrefresh(text);
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print_position(dialog, height, width);
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scrollok(box, TRUE);
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scroll(box); /* Scroll box region up one line */
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scrollok(box, FALSE);
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print_line(box, boxh - 1, boxw);
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wnoutrefresh(box);
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print_position(dialog);
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wmove(dialog, cur_y, cur_x); /* Restore cursor position */
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wrefresh(dialog);
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}
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@ -194,10 +218,8 @@ int dialog_textbox(const char *title, const char *tbuf, int height, int width)
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break;
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begin_reached = 0;
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print_page(text, texth, textw);
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print_position(dialog, height, width);
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wmove(dialog, cur_y, cur_x);
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wrefresh(dialog);
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refresh_text_box(dialog, box, boxh, boxw,
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cur_y, cur_x);
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break;
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case '0': /* Beginning of line */
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case 'H': /* Scroll left */
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@ -212,9 +234,8 @@ int dialog_textbox(const char *title, const char *tbuf, int height, int width)
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hscroll--;
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/* Reprint current page to scroll horizontally */
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back_lines(page_length);
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print_page(text, texth, textw);
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wmove(dialog, cur_y, cur_x);
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wrefresh(dialog);
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refresh_text_box(dialog, box, boxh, boxw,
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cur_y, cur_x);
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break;
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case 'L': /* Scroll right */
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case 'l':
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@ -224,16 +245,21 @@ int dialog_textbox(const char *title, const char *tbuf, int height, int width)
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hscroll++;
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/* Reprint current page to scroll horizontally */
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back_lines(page_length);
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print_page(text, texth, textw);
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wmove(dialog, cur_y, cur_x);
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wrefresh(dialog);
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refresh_text_box(dialog, box, boxh, boxw,
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cur_y, cur_x);
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break;
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case KEY_ESC:
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key = on_key_esc(dialog);
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break;
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case KEY_RESIZE:
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back_lines(height);
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delwin(box);
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delwin(dialog);
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on_key_resize();
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goto do_resize;
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}
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}
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delwin(text);
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delwin(box);
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delwin(dialog);
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return key; /* ESC pressed */
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}
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@ -353,13 +379,13 @@ static char *get_line(void)
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/*
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* Print current position
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*/
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static void print_position(WINDOW * win, int height, int width)
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static void print_position(WINDOW * win)
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{
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int percent;
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wattrset(win, dlg.position_indicator.atr);
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wbkgdset(win, dlg.position_indicator.atr & A_COLOR);
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percent = (page - buf) * 100 / strlen(buf);
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wmove(win, height - 3, width - 9);
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wmove(win, getmaxy(win) - 3, getmaxx(win) - 9);
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wprintw(win, "(%3d%%)", percent);
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}
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